Also listed on Inventergy, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Nov 26, 2026 · High confidence
20-year base term ended Aug 7, 2022
Held by Invt SPE LLC
Filed Feb 25, 2004 as application 10/487,574 · Granted Apr 20, 2010
Base term plus 1572 days of patent term adjustment (USPTO delay)
Today
2002
2026
Clock starts
Aug 7, 2002
Aug 7, 2002
Term ends
Nov 26, 2026
Nov 26, 2026
Granted
Apr 20, 2010
Apr 20, 2010
base term
patent term adjustment
fee events
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
1,572
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
3 of 3
Maintenance fees paid
Three maintenance fees fall due, at 3.5, 7.5 and 11.5 years from grant. This counts the ones the record shows paid.
3
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
This patent's term runs 1572 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. Confidence: High. from the record
How we calculated this date
One row per rule, each showing its own input and what it did to the date. A step we could not verify says so instead of resolving itself.
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Aug 7, 2002, when application PCT/JP2002/008046, the earliest non-provisional in its chain, was filed (this one was filed Feb 25, 2004) | Aug 7, 2022 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1572 days, USPTO patent term adjustment record | Nov 26, 2026 | High confidence |
| Terminal disclaimer cap | None on record | no cap applied | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Nov 26, 2026 | High confidence |
This family
| US 7,702,025 | this patent Nov 2026 | Nov 2026 |
| Application 10/787,536 | Abandoned not computed | not computed |
2 of 3 applications in this family shown, earliest filings first. The applications whose file history this site holds. The family may have others.
Assignments
Assignment documents as recorded at the USPTO, oldest first, with the reel and frame each was recorded at. A recorded assignment is a filed document, not a statement of current ownership, and the absence of a later one is not evidence that the last one still stands.
| Recorded | Assignor | Assignee | Conveyance |
|---|---|---|---|
| Feb 25, 2004 Reel 15468, frame 433 | Sudo, Hiroaki | Matsushita Electric Industrial Co., Ltd. | Assignment of Assignor's Interest |
| Nov 21, 2008 Reel 21897, frame 624 | Matsushita Electric Industrial Co., Ltd. | Panasonic Corporation | Change of Name |
| Jan 3, 2014 Reel 31911, frame 911 | Panasonic Corporation | Inventergy, Inc. | Assignment of Assignor's Interest |
| Jan 27, 2014 Reel 32127, frame 234 | Inventergy, Inc. | Beyers, Joseph | Security Agreement |
| Jan 29, 2014 Reel 32136, frame 844 | Inventergy, Inc. | Hudson Bay IP Opportunities Master Fund, LP, as Collateral Agent | Security Agreement |
| Mar 25, 2014 Reel 32513, frame 759 | Beyers, Joseph | Inventergy, Inc. | Release of Security Interest |
| Mar 25, 2014 Reel 32525, frame 81 | Inventergy, Inc. | Hudson Bay IP Opportunities Master Fund, LP, as Collateral Agent for Certain Buyers | Security Interest |
| Oct 1, 2014 Reel 33883, frame 330 | Inventergy, Inc. | DBD Credit Funding LLC | Security Interest |
| Oct 14, 2014 Reel 33987, frame 866 | Hudson Bay IP Opportunities Master Fund, LP | Inventergy, Inc. | Release of Security Interest |
| Nov 3, 2014 Reel 34150, frame 298 | Hudson Bay IP Opportunities Master Fund, LP, for Itself and as Collateral Agent for Certain Buyers | Inventergy, Inc. | Release of Security Interest |
| Jan 4, 2017 Reel 41247, frame 908 | Inventergy Global, Inc.; Inventergy, Inc.; Eon Communication Systems, Inc.; Inventergy Holding, LLC; Inventergy Innovations, LLC; Inventergy Iot, LLC; Inventergy LBS, LLC | DBD Credit Funding LLC, as Collateral Agent | Security Interest |
| Jun 19, 2017 Reel 42885, frame 685 | Inventergy, Inc. | Invt SPE LLC | Assignment of Assignor's Interest |
Sources
Google Patents · The patent document at USPTO · Assignment records at USPTO
USPTO account required: This application in Patent Center · USPTO's maintenance fee lookup
Maintenance fee events come from USPTO's own fee records. Its fee lookup asks for the patent number and the application number.
What's changing
Nov 2026
Term ends Nov 26, 2026. No further fees fall due before then
Note
The 1572 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
11
later US patents cite this one
That is above the median of utility patents granted in 2010 in our data, the only group it is compared against.
How we rank
Every date shows its work: the base term, any term adjustment or extension, any disclaimer cap, and the maintenance fee record, each with a confidence tier. How this record was built
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.